During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

Red frames showcase remnants of one of New York's original subway stations.

A reminder to choose water over wine since 1888.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

Become a prohibition rebel.

These historic buildings once housed the headquarters of one of the most infamous gangs of New York.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

This feline raises a friendly paw at drivers barreling toward the freeway.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

38-story baroque tower reflecting Detroit's rise, fall, and possible rise again.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

This sprawling bookstore spans four floors and has more than a million books in stock.

A 19th-century architectural wonder designed by the "father of the skyscraper."

Ruins of a once-prized railroad station in New York.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

A quirky collection of outsider art made from automobile parts.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.